Title:
【発明の名称】坑口パッキン装置
Document Type and Number:
Japanese Patent JP2811549
Kind Code:
B2
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Inventors:
Mitsuo Kanazawa
Application Number:
JP22475695A
Publication Date:
October 15, 1998
Filing Date:
August 08, 1995
Export Citation:
Assignee:
Kanazawa Manufacturing Co., Ltd.
International Classes:
E21D9/00; E21D9/06; (IPC1-7): E21D9/06
Domestic Patent References:
| JP734775A |
Attorney, Agent or Firm:
Kuniaki Nishioka